1421545423 has 8 divisors (see below), whose sum is σ = 1505528640. Its totient is φ = 1337602560.

The previous prime is 1421545421. The next prime is 1421545451. The reversal of 1421545423 is 3245451241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1421545423 - 2¹ = 1421545421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421545421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92103 + ... + 106423.

It is an arithmetic number, because the mean of its divisors is an integer number (188191080).

Almost surely, 2^1421545423 is an apocalyptic number.

1421545423 is a deficient number, since it is larger than the sum of its proper divisors (83983217).

1421545423 is a wasteful number, since it uses less digits than its factorization.

1421545423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20177.

The product of its digits is 19200, while the sum is 31.

The square root of 1421545423 is about 37703.3874207610. The cubic root of 1421545423 is about 1124.3984729614.

Adding to 1421545423 its reverse (3245451241), we get a palindrome (4666996664).

The spelling of 1421545423 in words is "one billion, four hundred twenty-one million, five hundred forty-five thousand, four hundred twenty-three".